Find $a _ { 1 }$ And and R for a Geometric Sequence

question 76

Multiple Choice

Find $a _ { 1 }$ and and r for a geometric sequence { $\left\{ a _ { n } \right\}$ } from the given information.
- $a _ { 2 } = 18$ and $a _ { 7 } = 4,374$

• A) \(a _ { 1 } = 18\) and \(r = 3\)
• B) \(a _ { 1 } = 6\) and \(r = 3\)
• C) \(a _ { 1 } = 6\) and \(r = 12\)
• D) \(a _ { 1 } = 18\) and \(r = 12\)

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